Momentum and pseudomomentum in a shallow water equation

被引：0
|
作者：
Hanna, J. A. [1 ]
机构：
[1] Univ Nevada, Mech Engn, 664 N Virginia St 0312, Reno, NV 89557 USA
来源：
PHYSICS OF FLUIDS | 2022年 / 34卷 / 11期
关键词：
PRINCIPLE;
D O I：
10.1063/5.0120645
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A basic shallow water system with variable topography is analyzed from the point of view of a Lagrangian derivation of momentum, energy, and pseudomomentum balances. A two-dimensional action and associated momentum equation are derived. The latter is further manipulated to derive additional equations for energy and pseudomomentum. This revealed structure emphasizes broken symmetries in space and a reference configuration and preserved symmetry in time. Published under an exclusive license by AIP Publishing.
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页数：4
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